The centuries before China’s unification under the Qin Dynasty (221 BC) are known as the Warring States period, an era when large armies clashed in fierce competitions for power and territory.
The rulers of these competing large states amassed giant armies of tens of thousands of infantrymen, who marched in combat against their enemies. In China, one innovation against such attacks was the construction of fortification walls built along borders. Read more about An Earlier Great Wall of China

Properly piecing together a rare early human skull (12,000 to 15,000 years old!) is a difficult task, but Robert Martin and JP Brown are pioneering the usage of medical technologies to give us a better picture of what Magdalenian Woman really looked like. Read more about Video: Putting Heads Together